Weldless, drop forged, carbon steel shackle with an eye bolt which has a metric coarse threaded end. Please specify Ungalvanized (Black) or Galvanized shackle is required. Galvanized. Size: Body dia: 10mm, Opening: 17mm, Screw Pin Thread: M12, Clear Length: 48mm, Pin dia: 12mm, S.W.L: 0.6ton.